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Global 企业标准 JDM4 上海交通大学含Ag的与高稀土的镁合金 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: JDM4 / JDM4
Category Grade Standard Region/Area Standard Content
Metals JDM4 -- Global 上海交通大学含Ag的与高稀土的镁合金

Chemical composition(mass fraction)(wt.%) of the JDM4

Element Min Max Similar

Mechanical Properties of steel grade JDM4

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
622 (≥) 529 (≥) 32 44 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade JDM4

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
44 - -     0.43 -  
693 595 - 13.3 414   -  
788 - 22 22.2   244 142

Heat Treatment of steel grade JDM4

Heat treated : 1619°C - 1765°C

Technological Curves of steel grade JDM4

Cross Reference Table (Equivalent Grade) of JDM4

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